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O'Fallon
Average rainfall
ClimateForecastNovemberDecember >>

O'Fallon (IL) Precipitation: Average Monthly Rainfall and Snowfall

This graph shows the average amount of rainfall per month in O'Fallon (Illinois). The numbers are calculated over a 30-year period to provide a reliable average.

  • A lot of rain (rainy season) falls in the months: April, May, June, July and September.
  • On average, June is the wettest month with 142 mm of precipitation.
  • On average, January is the driest month with 56 mm of precipitation.
  • The average amount of annual precipitation is 1171 mm.

Current rainfall in O'Fallon (IL)

Sat   Nov 02
19°C | 3°C
SE 14 km/h
almost clear and no rain

almost clear and no rain

hourly forecast
Sun   Nov 03
22°C | 9°C
SE 18 km/h
10 mm
broken clouds and thunder

broken clouds and thunder

hourly forecast
Mon   Nov 04
24°C | 17°C
S 25 km/h
23 mm
broken clouds and thunder

broken clouds and thunder

hourly forecast
5-Day Forecast 10-Day Forecast

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